cxa3071n Sony Electronics, cxa3071n Datasheet - Page 18

• Manufacturer Part Number: cxa3071n
• Description: Read/write Amplifier With Built-in Filters For Fdds
• Manufacturer: Sony Electronics

1M/outer track, inner track
1.6M, 2M/outer track
Filter Frequency Response
The LPF characteristics are set to Chebyshev (1dB ripple) for 1.6M, 2M/inner track mode only, and to
Butterworth for other modes. The 1.6M and 2M characteristics and fc ratio are identical.
The BPF center frequency f
In the comprehensive characteristics, the relationship between the peak frequencies f
depending on the differences of the LPF type:
Butterworth characteristics
Chebyshev (1dB ripple characteristics) f
f
0B
= 1.2fc
Tertiary Butterworth
(n = 1, 2, 3)
fcn
fon
0B
L.P.F
is fixed at 1.2 times the LPF cutoff frequency.
fcn = 1.28f
C4
= 1.09f
f
OB
B.P.F
Q = 0.577
04
0
n (n = 1, 2, 3)
– 18 –
(Differential characteristics)
Tertiary Chebyshev
1.6M, 2M/inner track
fc
fo4
4
1dBRp
L.P.F
(High-band noise cutoff)
(Comprehensive characteristics)
0
and fc is as follows,
CXA3071N